Information terminal system getting information based on a locat

Details Information terminal system getting information based on a locat Information terminal system getting information based on a locat

1995-03-15

1997-01-28

Pan, Daniel H.

Communications: directive radio wave systems and devices (e.g.,

Clutter elimination

Mti

342450, 342451, G06F 924, G06F 1342

Patent

active

055985726

ABSTRACT:
An information terminal system including a process control computer and a portable terminal device for inputting information to said process control computer and gaining information from said process control, includes component information storing means for storing information for distinguishing each one of plural components composing a plant and component identifying means for identifying a component from plural components composing a plant and existing in the direction indicated by and at the location of the portable terminal device, by using information for distinguishing each one of the plural components stored in the component information storing means.

REFERENCES:
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patent: 4443861 (1984-04-01), Slater
patent: 4725970 (1988-02-01), Burrows et al.
patent: 5119104 (1992-06-01), Heller
patent: 5211052 (1993-05-01), Shakkattai et al.
patent: 5237408 (1993-08-01), Blum et al.
patent: 5305183 (1994-04-01), Teynor
patent: 5311562 (1994-05-01), Palusamy et al.
M. Polke, "Prozessleittechnik [Process Control Engineering]", R. Oldenburg Verlag Munchen, 1st Edition 1991, Chap. 8, pp. 379-455.

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